Machine for forming locks on metallic plates.



C. W. GONNBR. MACHINE PoR FORMING LOCKS 0N METALLIC PLATES.

APPLICATION FILED SE 1,1 14,862. PT 2 1m Patented 0015.27, 1914.

10 SHEETS-SHEET 1.

THE NORRIS PEYERS 60,. PHoro-LITHD.. WASHING ION, D4 C G. W. CONN ER.

MACHINE PCR PORMINC LOCKS 0N METALLIC PLATES.

am a@ 1 ds Wa..

Llu

um mvof y/ aff.

C. W. CONNBR.

MACHINE FOR FORMING LOCKS 0N METALLIC PLATES.

APPLICATION FILED SEPT. 20,1912.

1,1 14,862. Patented 0111.211914.

10 SHEETS--SHBBT 3.

ATTORNEY.

THE MORRIS PETERS C0.. PHDTD-LIYHO., WASHING ION. D. C

G. W. GONNER.

MACHINE FOR FORMIN G LOCKS 0N METALLIC PLATES. APPLIUATION FILED SEPT. ze, 1912.

1, l 14,862. Patented 0011.27, 1914.

10 SHEETS-SHEET 4.

THE NORM/5 PEN-TNS C0., Pimm LITHO.. WASIIINGIUN. D. C,

C. W.V DONNER. MACHINE FOR PORMlNG LOCKS 0N METALLIC PLATES. APPLICATION FILED SEPT. 26,1912.

1,1 14,862. Patented 001;. 27, 1914.

10 SHEETS-SHBET 5.

IWT/VESSEE NVENo/e.

ATTORNEY.

THE MORRIS PETERS C0 4 PHOTOALITHO., WASHING ION, l!4 C` C. W. GONNER.

MAGHINB FOR FORMING LOCKS 0N METALLIC PLATES.

APPLIOATION FILED sEPT.2e,1912.

1,1 14,862. Patented 0ct.27,1914.

10 SHEETS-SHEET 6.

J/VVENTR.

5;? www W A TTORNEY.

WTNESSES:

- THE NDRRIS PETERS C0., PHOTO-LITHO.. WASHING/UN. D. C

C. W. GONNER.

MACHINE FOR PORMING LOCKS 0N METALLIC PLATES.

APPLICATION FILED SEPT. 26,1912.

1,1 14,862. Patented ont. 27, 1914.

1o sums-SHEET 7.

WTNESSES: NVEVTOR.

87 @QW WI Ma A TTORNEY.

THE MORRIS PETERS Cov, PHUTOYL/TNO.. WASHINOION. D C,

C. W. CONNER.

MACHINE FOR PORMING LOCKS 0N METALLIC PLATES.

APPLICATION FILED SEPT. 26,1912. 1,1 14,862. Patented Oct. 27, 1914. I 10 SHBBTS`SHEBT B.

WHA/5555s: /Z i 7 /NVENTO/e.

A TTU/NEM THE MORRIS PETERS C0.. PHDTaL/THQ, WASNINGIUNA D4 C c. W.v GONNER. MACHINE FOR FORMING LOOKS 0N METALLIC PLATES. APPLICATION FILED SBPT. 26,1912.

1, 1 14,862, Patented Oct. 27, 1914.

10 SHBETB-SHIIET 9.

WTNESSES: NVENTOR.

13V T f. WM fda/M @c A TTG/why.

THE MORRIS PErErIs C0..PH010LITHU.. WASHINGIUN. D. c

C. W. CONNER. MACHINE FOR FORMING LOCKS 0N METALLIC PLATES. APPLIUATION FILED sBPT.2,1912.

1,1 14,862. Patented 001. 27, 1914.

10 SHEETS-SHEET 10.

A TTOIENEY.

THE MORRIS PETERS C0.. PHOTO-LITHD., WASHING I'ON, D. C.

Y By 1 www fw 7h CARLTON-W. CONNERLOF TORONTO, ONTARIO, CANADA.

MACHINE FOR FORMING LOCKS ON METALLIC PLATES.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed september 2c, 1912. serial No. 722,481.`

To all whom it may concern Be it known that I, CARLTON VEsco'r'r CoNNnn, of the city of Toronto, Province of Ontario, Canada, have invented certain new and useful improvements in Machines for Forming Locks on Metallic Plates, of which the following is a specification.

This invention relates to machines for forming the locks on metallic shingles and the like and my object is to devise a machine which will take in metal plates at one end and turn them out at the other end with the locks completely formed, thus saving the time and labor hitherto wasted in conveying the plates to and removing them from the separate machines, usually four in number, hitherto employed.

I attain my object by arranging in series and in proper relationship to a traveling` bed the necessary mechanisms for forming the lock and by combining therewith means for imparting a stepwise movement to the bed and alternating therewith a simultaneous operating movement of the various lockformingmechanisms. Means are also provided for suitably clamping the shingles on the bed when they are being operated on and for ejecting them after they have passed the last lock-forming `mechanism7 all substantially as hereinafter described and illustrated in the accompanying drawings in which- Figure 1 is a side elevation of one half of the machine; Fig. 2 is a side elevation of the other half of the machine and is to be used as a continuation of Fig. l; Fig. 3 is a side elevation on a smaller scale of the machine taken from the opposite side to Figs. 1 and Qand illustrating only certain features of construction not clearly shown in said figures; Fig. l is a plan view illustrating the discharge mechanism; Fig. 5 is a side elevation of the half of the machine shown in Fig. 2, the view being taken from the other side; Fig. 6 is a plan view of the same end of the machine; Fig. 7 is an end elevation, partly in section, looking from the left, in Fig. l. Fig. S is a plan view, partly broken away, of parts of the constructions shown in Fie. 7. Fig. 9 is a vertical section through the folding mechanism; Figs. l0, 11 and 12 are sectional details illustrating the operation of foldingthe edge of the shingle; Fig. 13 is a vertical section through the mechanism for compressing` the folded tical cross section through the lock finishing mechanism; Fig. 19 is a sectional detail illustrating `the finishing of the lock; Fig. 20 is a sectional detail of the crank adjusting mechanism for the compressing and lockiinishing nieclianisms; F ig. 21 is a plan View of the mandrel carrying slide of the locklinishingmechanism; Fig. 22 is a cross section of the finished lock; Fig. 2.3 is a side elevation, partly in Section, of part of the i mechanism actuating the presser bars which clamp the shingles on the -plates carrying them. Fig. 24.- is a plan view of the mandrel carrying slide of the lock compressing mechanism; Fig. 25 is a cross section of the lcck after compression; Fig. QG is a cross section of the mandrel carrying bar and the slide of the lock compressing mechanism; Fig. 27 is a sectional detail of one of spring pressure devices atthe ingoing end oli' the longitudinal presser bars of the machine.

'In the drawings like numerals of reference indicate corresponding parts in the different figures.

Referring particularly to Figs. 1, 2 and 3, 1. is the main frame of the machine suitably constructed to carry the different parts. At cach end of the frame on adjustable bearings 2 is supportcifl a shaft 3 carrying sprocket wheelsl Llon which are carried the sprocket chains 5. Certain of the links of these chains are provided with lugs 6 on which are pivoted the plates or dies 7, each die being preferably connected with two pairs of lugs shown particularly in Fig. These chains and dies form an end* less traveling hed on which the metallic platrs forming thc shingles are supported as they are carried through the machine. These plates, as shown particularly in Figs. 2 and have their surfaces shaped to the pattern of the metallic shingle to be caried thereby so that when the shingle is inplace thereon, the plate contacts therewith substantially at every point of its surface and practically held in rigid relationship with the plate.

The operation of the machine necessitates the traveling bed being given a stepwise movement. This is accomplished by the mechanism l will now describe.

8 is a longitudinal shaft which is given an intermittent movement as hereinafter described. @n this shaft is the loose gear wheel 9 which may be driven in any suitable manner. This gear wheel has the bevel pinion 10 secured thereto. This bevel pinion meshes with the gear wheel 11 fast on the transverse shaft 12. To the lother endof the shaft is secured `the disk 13 carrying 'the wrist pin 11i on which is journaled one end of the connecting rod 15 to the other end of which is journaled the rock arm 16 rocking on the journal of the disk 17 which is preferably shaped as a drum open at one endg the rock arm fitting within the flange 18.

The rock arm and disk are adapted to have a ratcheting action by the following mechanism: Sliding in a suitable guide in the rock arm is a bolt 197 the end being adapte-d to engage in one of the holes 20 formed in the flange 18. This bolt is pressed yieldingly outwardly by means of the coil spring 21 preferably contained within a longitudinal hole bored in the bolt, the lower end of the spring engaging the rock arm. A finger Q2 extends outwardly from 'the bolt through a slot 23 in the side of the rock arm. Located in the path of this linger adjacent the forward end of its path, as the rock arm moves forwardly7 is a stationary cam 24C of such shape that as the linger is pressed against it the former will be pressed inwardly toward the center on which the rock arm oscillates. At the rearward end of the movement of the rock arm the bolt 19 is pressed by the spring 21 into engagement with one of the holes Q0. At the for- -ward end of the movement of the rock arm the bolt is withdrawn by the action of the cam 242 on the finger 22 as just described7 and the rock arm set free to move rearwardly to engage the next rearward hole 9.0. By this means it will be seen that continuous movement of the shaft 1 2 is converted into an intermittent rotary movement of the disk 17. 0f course, other devices might be employed for the same purpose.

The intermittent movements of the disk are imparted to the traveling bed by means of the gear whce 25 fast on the shaft 2G of the d i 'k 17 and meshing with the gear wheel 27 on the adjacent shaft 3.

As the metallic shingles supported on their dies 'T' must be accurately positioned 'with respect to the lock-forming mechanisms it is necessary to provide a positive stop mechanism to stop the movements of the traveling bed and for that purpose l provide the following mechanism: A spring actuated latch is suitably carried on the main frame just above the flange 1S on the disk 17. This normally tends to move into position to engage the notches 29 formed in the exterior periphery of the `flange 18. The forward side of each notch is preferably beveled as shown to guide the latch into position. Each time a notch 29 comes below the latch 23 the disk 17 will be positively stopped and the mechanism will be so timed that this will occur at the moment the rock arm 16 ias reached the end of its forward stroke.` To release the latch when the next movement of the bed is to take place l provide the following mechanism: The bent lever 30l is fulcrumed on` the frame intermediate its ents.` @ne end engages beneath the lug 31 formed on the latch 28 and the other lies on the path of the cam projection 3Q guided by the disk 13. At the proper time the projection 32 engages he bent lever 30 and rocks it causing it to raise the lug y31 and thus release the latch. The cam lever is normally held in a latch freeing position by means of the coil spring connected at one end with the frame and at the other to the lever.

As the traveling bed acquires some' considerable momentum l find it necessary to provide frictional meansto take up this momentum and thus ease the jar on the stop mechanism. For this purpose l provide the band brake 35 fast on the shaft 26. This band brake is actuated by means of the bent lever 36 (see Fig. 2) fulcrumed intermediate its ends and pivotally connected at one end to the band of the brake, the other end of the band being adjustably connected in the usual manner tov a suitable stationary support 37. The other end of thev bent lever lies in the path of the cam 33 rigidly secured to the shaft 12. This cam is so shaped and timed as to apply the band brake before the latch 28 engages one of the notches 29.

As it is desirable to drive the traveling bed from each end l gear the shafts 3 together by any suitable means. The best arrangement with the machine as at present laid out is shown particularly in Figs. 1, 2 and G. The shafts 39 at opposite ends of the machine are geared by means of bevel gearing -lfO to the adjacent shaft 3. The inner ends of these shafts 39 are geared by means of the spur gears 41 with the intermediate shaft which is sufliciently raised to clear the gear wheel 9 which stands in the way of directly joining up the shafts 39.

The upper surface of the main frame of the machine is formed with the guides 13 which are preferably provided with ribs 44 engaging in corresponding grooves in the dies 7 which are thus held securely against lateral movement. At the base of the main frame l provide a series of antifriction .rollers l5 on which the plates may travel thus easing the strain on the sprocket chains 5. These antifriction rollers are preferably connected to the spindles 46 journaled lin open bearings 47 at the sides of the base of the frame.`

The necessary drive for the various lockforming mechanisms and for certain clamping means to be hereinafter described is obtained by means of the following mechanisms: The shaft 8 has a gear wheel 48 secured thereto which meshes with the gear wheel 49 suitably journaled on the frame and meshing with the gear wheel 50 fast On the longitudinal shaft 51 (see Fig. 13). `This shaft 51 is geared by means of bevel gearing 52 to the transverse shaft 53 which is geared by means of bevel gearing 51 to the longitudinal shaft 55 (see Fig. 8). These shafts 51 and 55 actuate clamping means for the shingles constructed as follows: `Two bridges 56 span the main frame (see particularly Figs. 3 and 9). In these bridges slide rods 57 are slidably supported. These slide rods at their lower ends carry the presser bars 58 which extend longitudinally of the machine just above the upper surfaces of the plates 7 carryingthe shingles. To apply pressure to these bars to firmly hold the shingles when the loelr forming mechanisms are in operation 1 provide the roel: shafts 59 suitably journaled on the bridges. These rock shafts have secured thereto rock arms 60 preferably embracing the slide rods 57. To these rock arms are pivotally connected the upper `ends of the slide rods 61. `These slide rods at their lower ends are connected with the yokes 62 embracing the shaft 55. On the shaft are secured cams 63 and on each yoke is secured an antifriction roller 64rengaging the periphery of the adjacent cam. These cams are so shaped and timed that the rock arms 60 are actuated to operate the presser bars 5S to clamp the shingles immediately after each forward movement of the bed and to release the same immediately after the lock forming mechanisms are operated.

rlhe connection between the rock arms 60 and the slide rods 57 is by means of the coil springs 65 which engage the collars 162 on the slide rods and also engage beneath the forked ends of the rock arms 60 so that when the latter move downwardly spring pressure is applied to the bars 58. The ends of the presser bars 58 at the ingoing end of the machine are preferably spring pressed at all times (see` Figs.` 3, 7 and 27 ofthe drawings). For this purpose each bar is connected with a plunger 163 moving in a casing 164i secured to the cross bar 165 0f the frame of the machine. The coil springs 166 are in a state of compression and tend to press the plunger-s downwardly to apply the desired pressure to the presser bars 58.

rlhe first operation to be performed on the shingle is the truing of its sides which is performed Dy means of the mechanism best seen in Figs. 1` and 7 of the drawings. Shearing mechanisms are located at opposite sides of the machine each comprising a stationary knife 66 and a movable knife 67 carried by a head 68 vertically movable on suitable guides 69.` The heads are reciprocated by means of the eccentrics 70 on the shafts 51 and 55, the eccentric rods 7l being pivotally connected with the depending arms 72 connected with the heads 68. As the shafts 51 and 55 are intermittently rotated the shearing movementswill be effected at the proper time.

Before describing the construction and mode of operationof the remaining lock forming mechanisms it would be advisable to describe the means for causing the inter mittent rotation of the shaft 8 which actuates the shafts 51 and 55 as heretofore described and also the other lock forming mechanisms. The gear wheel 9 has the internal ratchet wheel 7 3 formed therein with which engages the pivoted dog 711 yieldingly pressed by means of the coil spring 7 5 to its engaging position. A rock shaft 76 is journaled transversely of the machine (see particularly Figs. 2, 13, 1o and 16.) To the end of this shaft is secured a rock arm 77. At the end of this rock arm there is a pin 78 engaging in an inclined slot 7 9 formed in the shifter lever 80 fulcrumcd at its lower end on a suitable part of the frame. The upper end of the shifter lever engages in a slot in a trip 81 slidably supported on a sta tionary part. lt evident that by rocking the rock shaft 76 this trip may be projected into and out of the path of the dog 74. The other end of the rock shaft 76 lies adjacent the disk 13 (see particularly Fig. 5) and has secured thereto the rock arm 82, the free end of which lies in the path of the pin S3 secured to the side of the disk .13. One or more coil springs 84 are connected to the rock arm 82 and to suitable stationary supports and tend to rock the arm to cause the shaft 76 to throw the trip 81 to its operative position in which it lies in the path of the dog 74l to disengagc the latter from the ratchet wheel. lVhen, however, the pin 83 depresses the arm 82 the trip 8l is drawn back to its inoperative position allowing the dog to engage the ratchet wheel 73 so that the gear wheel 9 will drive the shaft S until such time as the pin 83 has passed by the end of the rock arm 82. Thus the shaft S is actua ted intermittently7 its movements alternating with those of the traveling bed.

After the sides of the shingle have been trimmed it passes forward to the folding mechanism shown particularly in Figs. 1, 9, 10, 11 and 12. This folding mechanism is provided with suitable guides 85 in which the clamp 86 is vertically slidable. This clamp carries at its lower' edge the laterally projecting steel plate 87 forming a mandrel over which the shingle is bent as shown. The clamp at the proper moment is forced down on top of the shingle as shown in Fig. 10 by the mechanism hereinafter described. Cooperating with the mandrel 87 is the bending leaf 89 suitably journaled at its ends on the upper ends 0f the slides 147 suitably guided on the main frame. The lower` ends of these slides are provided with antifriction rollers 148 which engage the cams 149 fast on the shaft 51 (see particularly Figs. 1 and 9.) Secured to the bending leaf is the mandrel 90, the edge of the mandrel being offset from the axis on which the bending leaf is journaled. Above the mandrel. 87 is located an adjustable leaf 91 which is preferably hinged at 92 on the clamp 86 and is adjustable by means of the toggles 939 one half of each toggle being suitably connected with the leaf and the other half threaded into a suitable socket on the clamp. 1t is evident that by disconnecting these toggles and screwing their upper parts in or out before reconnecting them that any desired angle may be given to the hinged leaf 92. The folding operations are as follows: The clamp descends following which the bending leaf 89 is brought to the position shown in Figs. 10 and 12 folding the edge of the shingle into the form shown. rlhe parts are operated by the folding mechanism.

The shaft 51 has secured to it the worm 94 meshing with the worm wheel 95 on the vertical shaft 96 journaled on the frame of the machine. rlhis vertical shaft 95 by means of the worm gearing 97 actuates the longitudinal. cani shaft 98 carrying the cams 99. These cams actuate the rock arms 100 fulcrumed intermediate their ends on the shaft 101. These rock arms are preferably provided with antifriction rollers 102. The other ends of these rock arms 100 are connected with the clamp 86 by means of the connecting' rods 103 which are adjustable in length in any ordinary manner. By this mechanism the clamp is moved to engage the shingle as already described. The return movement is effected by means of the springs 104 connected at one end with the clamp and at the other end with the shaft 101. y

The bending leaf is brought to position by the raising of the slides 147. It is then turned on its journals from the position shown in Fig. 11 to the position shown in Fig. 10 by the following mechanism: Fast on the ends of the shaft 98 are the crank disks 150 to which are connected the upper ends of the connecting rods 151. The lower ends of these connecting rods are connected with the ends of the rock arms 152 secured to the ends of the bending leaf 89. The connection is by means of the pins 153 secured to the rock arms and engaging in the slots 154 formed in the connecting rods. The rew sult of this arrangement is that immediately the bending leaf has been brought to its operative position by the raising of the slides 147 the pins 153 are at the bottoms of the slots 154 so that a rocking movement to the bending leaf is immediately imparted thereto by the action of the crank disks 150. A slight dwell occurs until the connecting rods 151 have beenl brought down to effect an engagement between the pins 153 and the upper ends of the slots 154. The bending leaf is then immediately turned to the position shown in Fig. 11. As this occurs the low parts of the cams 149 come below the lower ends of the slides 147 which immediately drop withdrawing the bending leaf entirely from the path of the folded edge of the shingle so that the latter is free to be moved to the next lock forming mechanism. It will be noted that the slot 154 permits of the raising and lowering of the bending leaf to and from its operative position and the rocking of the same at proper times.

From the folding mechanism the shingle passes to the compressing mechanism shown particularly in Figs. 2,5, 13 and 14. The

i compressing mechanism comprises the frame 105 on which is suitably guided the vertically movable head 106. This head is reciprocated by means of the cranks 107 on the crank shaft 108 which are connected by means of the connecting rods 109 with the head 10G. rfhis head carries the presser bar 110 which as shown in Fig. 5 is shaped to iit the embossed surfaces of the shingle. The presser bar is preferably secured in place in a suitable socket so that different presser' bars may be substituted to suit the configuration of the shingle being operated upon. These presser bars are pressed outwardly by the coil springs 155, the presser bar being held in place and its outward movement limited by the pin and slot connections 156. Slidably supported on the frame 105 is a slide 111 which carries a bar 112'to which is secured the laterally projecting mandrel 113. rlhe bar is vertically movable on the bolts 114 screwed into the slide 111. The coil springs 115 tend to keep the bar 112 raised as shown. The head 105 carries an arm having a cam slot 116 formed therein engaging a projection 117 on the slide 111. From this it follows that as the cross head descends upon the shingle mandrel `113 is pushed into the fold 118 of the shingle which as shown in Fig. 12 has been left by the folding mechanism with the edge ofthe portion 119 at an angle to the horizontal. By the continued downward movement of the crosshead the part 119 is flattened to the horizontal and the fold 120 compressed as seen in Fig. 25 the bar 112 yielding as may be necessary.

Frein the lock compressing mechanism the shingle passes to the mechanism forming the hook 121 at the edge of the lock. (Sec Figs. 2, 13 and 19.) This comprises the frame 122 secured to the frame and carrying on suitable guides the head 123. rlhis head carries a presser bar 1211 shaped to iit over the portion of the lock already formed shown particularly in Fig. 19 and preferably detachably held in a recess in the head so that different presserI bars may be substituted if it be necessary. This presser bar is preferably spring actuated in the same manner as the presser bar 110 and the illustration of the former bar taken with TEig. 19 su'liiciently indicates a suitable arrangement for the bar 121. Below the presser bar is suitably sup ported on the frame the mandrel 125 which extends laterally and outwardly to fit beneath the part 119 of the shingle just outside 'the fold 120. The slide 126 is suitably guided in a position downwardly inclined toward the shingle onthe `frame 122 and has a mandrel 127 formed on its edge adapted to pass below the mandrel 125 as shown.

1n forming the hook 121 the head 123 first descends to support the lock as shown in Fig. 19 and the slide is then pressed inwardly to bend the edge of the shingle around the mandrel 12V. Movements `are imparted to the head 123 and the slide 126 in the following manner: The shaft 128 is journaled on the fame 122 and is driven by means of bevel gearing 129 from the inclined shaft 130 driven by the bevel gearing 131 from the intermittently driven shaft 8. This shaft by means of the cranks 132 actuates the connecting` rods 133 connected with the head 123. rlhe shaft 12S carries the cam 134i provided with a cam groove 135 in which engages the antifriction roller 136 journaled on the end of the rock arm 137 secured to the rock shaft 13S journaled on the frame. Secured to this shaft 138 are the rock arms 139. Connecting rods 140 are pivotally connected to the rock arms 139 and the slide 123. These connecting rods are preferably made adjustable in length in any well known manner so that the position of the mandrel 127 at the end of its forward movement may be accurately regulated.

It is preferable to make the cranks 107 and the cranks 132 `adjustable in throw to take up wear and to provide means for regulating the lowest positions of the presser bars 110 and 124i. For this purpose I provide the means shown particularly in Figs. 13 and 20 of the drawings. The upper ends of the connecting rods 109 or 133, as the case may be, have bearing brasses 157 j ournaled therein, the wrist pins 158 being j ournaled eccentrically in the brasses. The brasses have formed thereon or secured thereto the gears 159 which mesh with the pinions 160 secured to the spindles 161 journaled in the connecting rods and faced intermediate their ends to take a wrench. It is evident that by rotating the spindles the brasses157 may be rotated to vary the position of the wrist pins as may be desired.

It will be noted particularly on reference to Figs. 4, G and 7 of the drawings that the edges of the shingle project at each side beyond the sides of the plates 7.

`Secured to each side of the main frame are the bent. springs 141 in such a position as to engage beneath each of the edges of the shingle immediately after it has been carried forward from the lock forming mechanism and to loosen it from the plate carrying it so that it will be received by the fingers 142 (see Fig. 3) onto which each shingle is pushed by the pins 183 at the rear of the plate as the latter is carried around the sprocket wheel f1. These fingers are secured to the spindle 143 journaled transversely on the frame and provided at one end withthe gear wheel 11i-t. Vith this gear wheel meshes the segmental rack lever 1115 pivoted intel'- mediate its ends and connected by means of a suitably pivoted connecting rod 14.6 with the rock arm 1G. The fingers 142 are thus given an oscillating movement to eject the Finished shingles.

The operation of the machine is briefly as follows: The metallic sheets are placed on the plates 7 at the left hand side of the machine as shown in Fig. 1. The machine is then started in motion. The plate carrying the first sheet is moved to a position for the carrying out of the first operation, namely, the trimming of the edges of the sheet by the shearing mechanism shown in Figs. 1 and 7 of the drawings. The movement of the entire bed is stopped to enable the various operations to be performed on the metallic sheets by means of the intermittent motion mechanism described, the m0- mcntum being gradually absorbed by the brake mechanism, and the position of the traveling bed determined by the positive stop mechanism. lhile the trimming and lock forming mechanisms are operative, the presser bars 5S have the spring pressure applied thereto to firmly `hold the metallic sheets in position which pressure is relieved during such time as the bed is moving. The sheet trimmed by the shearing mechanism at the next movement of the, bed is brought into proper relationship with the first of` the lock forming mechanisms, shown more particularly in Figs. 9, 10, 11 and 12 of the drawings. by which mechanism the edge of the shingle is folded into S form, as shown particularly in Fig. 12 of the drawings. It will be understood of course that between each movement of the bed forming mechanism a fresh metallic sheet isplaced on one of the supporting plates of the endless bed so that while the machine is ruiming a succes'-y sion of plates is carried through the machine to be operated on by each of the various mechanisms in turn. From the folding mechanism, the metallic sheet is moved forward to the compressing mechanisms shown more particularly in Figs. 13 and 14. The function of this mechanism is to compress the S fold to the shape shown more particularly in Fig. 1f' rom the compressing mechanism the metallic sheet is moved to the lock forming mechanism shown more particularly in Figs. 18 and 19 by which the hook on the edge of the sheet is formed, the final result being shown in Fig. 22. From the `lock forming mechanism the supporting plates move Serrat/m to the position shown more particularly in Fig. 3, the metallic sheets carried by the plates being ejected one by one by the automatic mechanism illustrated at the left hand side of that figure.

`lli/That 1 claim as my invention is 1. 1n amachine for forming locks on metallic sheets the combination of an endless traveling bed; a plurality of lock-forming mechanisms arranged in series adjacent thereto; means for alternately actuating the loch-forming mechanisms and for moving said bed to cause each sheet to be moved from one loch-forming mechanism to the next in the series while said mechanisms are non-operative; means for clamping said sheets to the bed while the lock-forming mechanisms are operating comprising a pair of bars longitudinal of the machine; and means for applying a yielding pressure to said bars when the lock-forming mechanisms `are operating and for relieving the spring pressure wille the traveling bed is in motionbv 2. 1n a machine for forming locks on metallic sheets the combination of an endless traveling bed; a plurality of lock-forming mechanisms arranged in series adjacent thereto; means for alternately actuating the lock-forming mechanisms and for moving said bed to cause each sheet to be moved from one lock-forming mechanism to the next in the series while said mechanisms are non-operative; means for clamping said sheets to the bed while the lock-forming mechanisms are operating, comprising a pair of bars longitudinal of the machine; means for applying a yielding pressure to said bars when the loch-forming mechanisms are operating; and means for applying a constant yieldingpressure to the bars at the ends from which the bed is traveling.

3. 1n a machine for forming locks on metallic sheets the combination of an endless traveling bed; a plurality of lock-forming mechanisms arranged in series adjacent thereto; means for alternately actuating the lock-forming mechanisms and for moving said bed to cause each sheet to be moved from one lock-forming mechanism to the next in the series while said mechanisms are non-operative; a friction brake adapted to check the momentum of the traveling bed; means for applying said brake just previous to the time the lock-forming mechanisms operate and for releasing it after the bed has stopped; and positive stop mechanism adapted to lock the bed after each movement thereof and to release it after each action of the lock-forming mechanisms.

It. 1n a machine for forming locks on metallic sheets the combination of bed-carrying drums geared together for simultaneous operation; an endless bed carried thereby; a plurality of loch-forming mechanisms arranged in series adjacent the bed; driving means' therefor; a constantly driven shaft; a clutch whereby the driving means for the loch-forming mechanisms may be put in gear with the constantly driven shaft; means whereby said shaft actuates said clutch; and means whereby said, shaft imparts a step-wise movement to the bedcarrying drums.

5. 1n a machine for forming locks onmetallic sheets the combination of bed-carrying drums geared together for simultaneous operation; an endless bed carried thereby; a plurality of lock-forming mechanisms arranged. in series adjacent the bed; rotatable means journaled longitudinally of the machine; driving connections between said rotatable means and the lock-forming mechanisms; a constantly driven shaft gea-red to the said rotatable means, said gearing in-l operation; an endless bed carried thereby; a

plurality of lock-forming mechanisms. arranged in series adjacent the bed; driving means therefor; a constantly driven shaft; a clutch whereby the driving means for the loch-forming mechanisms may be put in gear with the constantly driven shaft; means whereby said shaft actuates said clutch; means whereby said shaft imparts a step-wise movement to the bed-carrying drums; positive stop mechanism adapted to lock the bed after each movement thereof and to release it after each action of the lock-forming mechanisms; and means actuated by said constantly driven shaft for applying said brake.

7. 1n a machine for forming locks on metallic sheets the combination of bed-carrying drums geared together for simultaneous operation; an endless bed carried thereby; a plurality of lock-forming mechanisms arranged in series adjacent the bed; driving means therefor; a constantly driven shaft; a clutch whereby the driving means for the loch-formingmechanisms may be put in `anged in series adjacentV the bed; driving means therefor; a constantly driven shaft; a clutch whereby the driving means for the lockforming mechanisms may be put in gear with the constantly driven shaft; means whereby said shaft actuates said clutch; means whereby said shaft imparts a step-wise movement to the bed-carrying drums; and positive stop mechanism adapted to `lock the bed after each movement thereof and to release it after each action of the lock-forming mechanisms, said brake and stop being actuated from said. constantly driven shaft.

9. In a machine for forming locks on metallic sheets the combination of bed-carrying drums geared together for simultaneous operation; a plurality of lock-forming mecha` nisms arranged in series adjacent the bed; a longitudinal shaft; a driving gear wheel having a clutch connection therewith; driving connections between said shaft andthe various lock forming mechanisms; `a transverse shaft geared to the longitudinal shaft; means carried by said transverse shaft for actuating j the clutch; a rotatable disk geared to one of the bed-carrying drums; a rock arm concentric therewith; a crank on the transverse shaft; a connecting rod connecting the rock arm and crank; and ratcheting connections between the rock arm and disk.

10. In a machine for forming locks on metallic sheets the combination of bedcarrying drums geared together' for simultaneous opi eration; a plurality of lock-forming mech anisms arranged in series adjacent the bed; a longitudinal shaft; a driving gear wheel having a clutch connection therewith; driving connections between said shaft and the various lock-forming mechanisms; a transverse shaft geared to the longitudinal shaft; means carried by said transverse shaft for actuating the clutch; a rotatable disk geared to one of the bed-carrying drums; a rock arm concentric therewith; a crank on the transverse shaft; a connecting rod connecting the rock arm and crank; rateheting connections between the rock arm and disk;

discharge arms hinged adjacent the rear bed-carrying drum; and connections between the rock arm and the discharge arms for rocking the latter.

11. In a machine for forming locks on metallic sheets the combination of an endless traveling' bed; a plurality of lock-forming mechanisms ar 'anged in series adjacent thereto and comprising means for forming an S fold at the side of the sheet, means for compressing the same and means for forming a hook at the edge; and means for alternately actuating the lock-forming mechanisms and `for moving said bed to cause cach sheet to be moved from one loclcforming mechanism to the next in the series while said mechanisms are non-operativel2.` In a machine for forming locks on metallic sheets the combination ofan end less traveling bed; a plurality of lockforming mechanisms arranged in series adjacent thereto and comprising meansfor trimming the sides `of the sheet, means for forming an S fold at `the side of the sheet, means `for compressing the same and means for forming a hook at the edge; and means for alternately actuating the lock-forming mechanisms and for moving said bed to cause each sheet to be moved from one lockforming mechanism te the next in the series while said mechanisms are non-operative.

13. In a machine for forming locks on metallic sheets the combination of an endless travcling bed; `a longitudinal shaft; folding inechanism for the edge of a sheet comprising a vertically movable part and a rocking part movable to and from a position to coperate with the vertically movable part; means actuated by said shaft and adapted to move said rocking part to and from its cooperating position; a second longitudinal shaft geared to the first; means actuated by said second shaft to actuate the vertically movable part; a crank on said shaft; a rock arm on the rocking part; and a connectingrod connecting the crank and the rock arm adapted to permit the rock arm and rocking part to drop to the noncoperating position when the crank is at the lowest part of its throw.

14.. In a machine for forming locks on metallic sheets the combination of an endless traveling bed comprising a plurality of supporting plates for metal sheets suitably linked together, each plate adapted to support a sheet with its edges overlapping the sides of the plate, and to act as an anvil in cooperation with a lock-forming mechanism; a plurality of lock-forming mechanisms arranged in series adjacent thereto, one of said mechanisms being adapted to utilize the said plates as anvils; and means for alternately actuating the lock-forrning mechanisms and for moving said bed to cause each sheet to be moved from one lock-forming mechanism to the next in the series While said mechanisms are non-operative.

l5. In a machine for forming locks on metallic sheets the combination of an endless traveling bed comprising a plurality of supporting plates for metal sheets suitably linked together, each plate adapted to support a sheet With its edges overlapping the sides oi' the plate, and to act as an anvilin cooperation With a lock-forming mechanism; a plurality of lock-forming mechanisms arranged in series adjacent thereto, one of said mechanisms being adapted to utilize the said plates as anvils; means for alternately actuating the lock-forming mechanisms and tor moving said bed to cause each sheet te be moved from one lock-forming mechanism to the next in the series While said mecha nisms are non-operative; and meansA for clamping said sheets to the bed While the lock-forming mechanisms are operating.

16. ln a machine for forming locks on metallic sheets the combination of an endless traveling bed comprising a plurality of supporting plates for metal sheets suitably linked together; a plurality ot lock-forming mechanisms arranged in series adjacent thereto and comprising means for formingan fold at the side oit the sheet; means for compressing the same; means for forming a hook at the edge; and means for alternately actuating the lock-forming mechanisms and for moving said bed to cause each sheet to be moi'fed from one lock-forming nechanism to the next in the series While said mechanisms are non-operative.

17. in machine for forming locks on metallic sheets the combination of an endless traveling bed comprising a plurality of supporting plates for metal sheets suitably linked together; a plurality of lock-forming mechanisms arranged in series adjacent thereto and eomprisiifig means for trimming the sides of the sheet, means :tor forming an .i3 told at the side ci. the sheet, means for compressing the same and means for forming a hoola at the edge; and means for alternately actuating the lock-forming mechanisms and for moving .said bed to cause each sheet to be moved from one lock-'forming mechanism to the next in the series While said mechanisms are non-operative.

1S. ln a machine for forming locks on metallic sheets the combination of means for supporting the sheets in a series of consecutive positions; a plurality of lock-forming mechanisms arranged in series adjacent said positions and comprising means for forming an told at the side of the sheet, means for compressing the same, means for forming a hook at the edge; and means for alternately actuating the lock-forming mechanisms and ,for moving each sheet from one lock-forming mechanism to the neXt in series While said mechanisms are non-operative.

19. ln a machine for forming locks on metallic sheets the combination of means for supporting the sheets in a series of consecutive positions; a plurality of lock-forming mechanisms arranged in series adjacent said positions and comprising means for trimming the sides of the sheet, means for forming an t3 fold at the side of the sheet, means for compressing the same, means for forming a hook at the edge; and means for alternately actuating the lock-forming mechanisms and for moving each sheet from one lock-forming mechanism to the next in series While said mechanisms are non-operative. 4

20. ln a machine for forming locks on metallic sheets the combination of means for supporting and carrying the sheets; a longitudinal' shaft; folding mechanism for the edge of a sheet comprising a vertically movable part and a rocking part movable to and from a position to cooperate with the vertically movable part; means actuated by said shaft adapted to move said rocking part to and from its coperating position; a second longitudinal shaft geared to the first; means actuated by said second shaft to actuate the vertically movable part; a crank on said shaft; a rock arm on the rocking part; and a connecting rod connecting the crank and the rock arm adapted to permit the rock arm and rocking part to drop to the nonvcoperative position when the crank is at the lowest part of its throw.

rlloronto, this 19th day of `ept., 1912.

CARLTON W7. CGNNFJR. Signed in the presence of- J. EDW. Marsan, E. l?. HALL.

tas-tea et this patent may te obtained for ve cents;each, by addressing the Commissioner of Patents, Washington, I3. C. 

